Coverage Report

Coverage Report - org.apache.maven.it.util.FileUtils

Classes in this File
Line Coverage
Branch Coverage
Complexity
FileUtils
0/486
0/274
3.431
FileUtils$FilterWrapper
0/1
N/A
3.431
 package org.apache.maven.it.util;
 
 /* ====================================================================
  * The Apache Software License, Version 1.1
  *
  * Copyright (c) 2001 The Apache Software Foundation.  All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
  *
  * 3. The end-user documentation included with the redistribution,
  *    if any, must include the following acknowledgment:
  *       "This product includes software developed by the
  *        Apache Software Foundation (http://www.apache.org/)."
  *    Alternately, this acknowledgment may appear in the software itself,
  *    if and wherever such third-party acknowledgments normally appear.
  *
  * 4. The names "Apache" and "Apache Software Foundation" and
  *    "Apache Turbine" must not be used to endorse or promote products
  *    derived from this software without prior written permission. For
  *    written permission, please contact apache@apache.org.
  *
  * 5. Products derived from this software may not be called "Apache",
  *    "Apache Turbine", nor may "Apache" appear in their name, without
  *    prior written permission of the Apache Software Foundation.
  *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  * ====================================================================
  *
  * This software consists of voluntary contributions made by many
  * individuals on behalf of the Apache Software Foundation.  For more
  * information on the Apache Software Foundation, please see
  * <http://www.apache.org/>.
  *
  */
 
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStreamWriter;
 import java.io.Reader;
 import java.io.Writer;
 import java.net.URL;
 import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Random;
 import java.util.Vector;
 
 /**
  * This class provides basic facilities for manipulating files and file paths.
  * <p/>
  * <h3>Path-related methods</h3>
  * <p/>
  * <p>Methods exist to retrieve the components of a typical file path. For example
  * <code>/www/hosted/mysite/index.html</code>, can be broken into:
  * <ul>
  * <li><code>/www/hosted/mysite/</code> -- retrievable through {@link #getPath}</li>
  * <li><code>index.html</code> -- retrievable through {@link #removePath}</li>
  * <li><code>/www/hosted/mysite/index</code> -- retrievable through {@link #removeExtension}</li>
  * <li><code>html</code> -- retrievable through {@link #getExtension}</li>
  * </ul>
  * There are also methods to {@link #catPath concatenate two paths}, {@link #resolveFile resolve a
  * path relative to a File} and {@link #normalize} a path.
  * </p>
  * <p/>
  * <h3>File-related methods</h3>
  * <p/>
  * There are methods to  create a {@link #toFile File from a URL}, copy a
  * {@link #copyFileToDirectory File to a directory},
  * copy a {@link #copyFile File to another File},
  * copy a {@link #copyURLToFile URL's contents to a File},
  * as well as methods to {@link #deleteDirectory(File) delete} and {@link #cleanDirectory(File)
  * clean} a directory.
  * </p>
  * <p/>
  * Common {@link java.io.File} manipulation routines.
  * <p/>
  * Taken from the commons-utils repo.
  * Also code from Alexandria's FileUtils.
  * And from Avalon Excalibur's IO.
  * And from Ant.
  *
  * @author <a href="mailto:burton@relativity.yi.org">Kevin A. Burton</A>
  * @author <a href="mailto:sanders@apache.org">Scott Sanders</a>
  * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
  * @author <a href="mailto:Christoph.Reck@dlr.de">Christoph.Reck</a>
  * @author <a href="mailto:peter@apache.org">Peter Donald</a>
  * @author <a href="mailto:jefft@apache.org">Jeff Turner</a>
  * @version $Id: FileUtils.java 723852 2008-12-05 20:28:26Z bentmann $
  */
 public class FileUtils
 {
     /**
      * The number of bytes in a kilobyte.
      */
     public static final int ONE_KB = 1024;
 
     /**
      * The number of bytes in a megabyte.
      */
     public static final int ONE_MB = ONE_KB * ONE_KB;
 
     /**
      * The number of bytes in a gigabyte.
      */
     public static final int ONE_GB = ONE_KB * ONE_MB;
 
     public static String FS = System.getProperty( "file.separator" );
 
     public static String[] getDefaultExcludes()
     {
         return DirectoryScanner.DEFAULTEXCLUDES;
     }
 
     public static List getDefaultExcludesAsList()
     {
         return Arrays.asList( getDefaultExcludes() );
     }
 
     /**
      * Returns a human-readable version of the file size (original is in
      * bytes).
      *
      * @param size The number of bytes.
      * @return A human-readable display value (includes units).
      */
     public static String byteCountToDisplaySize( int size )
     {
         String displaySize;
 
         if ( size / ONE_GB > 0 )
         {
             displaySize = String.valueOf( size / ONE_GB ) + " GB";
         }
         else if ( size / ONE_MB > 0 )
         {
             displaySize = String.valueOf( size / ONE_MB ) + " MB";
         }
         else if ( size / ONE_KB > 0 )
         {
             displaySize = String.valueOf( size / ONE_KB ) + " KB";
         }
         else
         {
             displaySize = String.valueOf( size ) + " bytes";
         }
 
         return displaySize;
     }
 
     /**
      * Returns the directory path portion of a file specification string.
      * Matches the equally named unix command.
      *
      * @return The directory portion excluding the ending file separator.
      */
     public static String dirname( String filename )
     {
         int i = filename.lastIndexOf( File.separator );
         return ( i >= 0 ? filename.substring( 0, i ) : "" );
     }
 
     /**
      * Returns the filename portion of a file specification string.
      *
      * @return The filename string with extension.
      */
     public static String filename( String filename )
     {
         int i = filename.lastIndexOf( File.separator );
         return ( i >= 0 ? filename.substring( i + 1 ) : filename );
     }
 
     /**
      * Returns the filename portion of a file specification string.
      * Matches the equally named unix command.
      *
      * @return The filename string without extension.
      */
     public static String basename( String filename )
     {
         return basename( filename, extension( filename ) );
     }
 
     /**
      * Returns the filename portion of a file specification string.
      * Matches the equally named unix command.
      */
     public static String basename( String filename, String suffix )
     {
         int i = filename.lastIndexOf( File.separator ) + 1;
         int lastDot = ( ( suffix != null ) && ( suffix.length() > 0 ) ) ? filename.lastIndexOf( suffix ) : -1;
 
         if ( lastDot >= 0 )
         {
             return filename.substring( i, lastDot );
         }
         else if ( i > 0 )
         {
             return filename.substring( i );
         }
         else
         {
             return filename; // else returns all (no path and no extension)
         }
     }
 
     /**
      * Returns the extension portion of a file specification string.
      * This everything after the last dot '.' in the filename (NOT including
      * the dot).
      */
     public static String extension( String filename )
     {
         int lastDot = filename.lastIndexOf( '.' );
 
         if ( lastDot >= 0 )
         {
             return filename.substring( lastDot + 1 );
         }
         else
         {
             return "";
         }
     }
 
     /**
      * Check if a file exits.
      *
      * @param fileName The name of the file to check.
      * @return true if file exists.
      */
     public static boolean fileExists( String fileName )
     {
         File file = new File( fileName );
         return file.exists();
     }
 
     public static String fileRead( String file )
         throws IOException
     {
         return fileRead( new File( file ) );
     }
 
     public static String fileRead( File file )
         throws IOException
     {
         return fileRead( file, null );
     }
 
     public static String fileRead( File file, String encoding )
         throws IOException
     {
         StringBuffer buf = new StringBuffer();
 
         Reader reader = null;
 
         try
         {
             if ( encoding != null && encoding.length() > 0 )
             {
                 reader = new InputStreamReader( new FileInputStream( file ), encoding );
             }
             else
             {
                 reader = new InputStreamReader( new FileInputStream( file ) );
             }
             int count;
             char[] b = new char[512];
             while ( ( count = reader.read( b ) ) > 0 ) // blocking read
             {
                 buf.append( b, 0, count );
             }
         }
         finally
         {
             IOUtil.close( reader );
         }
 
         return buf.toString();
     }
 
     /**
      * Appends data to a file. The file will be created if it does not exist.
      *
      * @param fileName The name of the file to write.
      * @param data     The content to write to the file.
      */
     public static void fileAppend( String fileName, String data )
         throws IOException
     {
         FileOutputStream out = null;
         try
         {
             out = new FileOutputStream( fileName, true );
             out.write( data.getBytes() );
         }
         finally
         {
             IOUtil.close( out );
         }
     }
 
     /**
      * Writes data to a file. The file will be created if it does not exist.
      *
      * @param fileName The name of the file to write.
      * @param data     The content to write to the file.
      */
     public static void fileWrite( String fileName, String data )
         throws IOException
     {
         fileWrite( fileName, null, data );
     }
 
     /**
      * Writes data to a file. The file will be created if it does not exist.
      * 
      * @param fileName The name of the file to write.
      * @param encoding The encoding of the file.
      * @param data The content to write to the file.
      */
     public static void fileWrite( String fileName, String encoding, String data )
         throws IOException
     {
         FileOutputStream out = null;
         try
         {
             out = new FileOutputStream( fileName );
             if ( encoding != null && encoding.length() > 0 )
             {
                 out.write( data.getBytes( encoding ) );
             }
             else
             {
                 out.write( data.getBytes() );
             }
         }
         finally
         {
             IOUtil.close( out );
         }
     }
 
     /**
      * Deletes a file.
      *
      * @param fileName The name of the file to delete.
      */
     public static void fileDelete( String fileName )
     {
         File file = new File( fileName );
         file.delete();
     }
 
     /**
      * Waits for NFS to propagate a file creation, imposing a timeout.
      *
      * @param fileName The name of the file.
      * @param seconds  The maximum time in seconds to wait.
      * @return True if file exists.
      */
     public static boolean waitFor( String fileName, int seconds )
     {
         return waitFor( new File( fileName ), seconds );
     }
 
     public static boolean waitFor( File file, int seconds )
     {
         int timeout = 0;
         int tick = 0;
         while ( !file.exists() )
         {
             if ( tick++ >= 10 )
             {
                 tick = 0;
                 if ( timeout++ > seconds )
                 {
                     return false;
                 }
             }
             try
             {
                 Thread.sleep( 100 );
             }
             catch ( InterruptedException ignore )
             {
             }
         }
         return true;
     }
 
     /**
      * Creates a file handle.
      *
      * @param fileName The name of the file.
      * @return A <code>File</code> manager.
      */
     public static File getFile( String fileName )
     {
         return new File( fileName );
     }
 
     /**
      * Given a directory and an array of extensions return an array of compliant files.
      * <p/>
      * TODO Should an ignore list be passed in?
      * TODO Should a recurse flag be passed in?
      * <p/>
      * The given extensions should be like "java" and not like ".java"
      */
     public static String[] getFilesFromExtension( String directory, String[] extensions )
     {
 
         Vector files = new Vector();
 
         java.io.File currentDir = new java.io.File( directory );
 
         String[] unknownFiles = currentDir.list();
 
         if ( unknownFiles == null )
         {
             return new String[0];
         }
 
         for ( int i = 0; i < unknownFiles.length; ++i )
         {
             String currentFileName = directory + System.getProperty( "file.separator" ) + unknownFiles[i];
             java.io.File currentFile = new java.io.File( currentFileName );
 
             if ( currentFile.isDirectory() )
             {
 
                 //ignore all CVS directories...
                 if ( currentFile.getName().equals( "CVS" ) )
                 {
                     continue;
                 }
 
                 //ok... transverse into this directory and get all the files... then combine
                 //them with the current list.
 
                 String[] fetchFiles = getFilesFromExtension( currentFileName, extensions );
                 files = blendFilesToVector( files, fetchFiles );
 
             }
             else
             {
                 //ok... add the file
 
                 String add = currentFile.getAbsolutePath();
                 if ( isValidFile( add, extensions ) )
                 {
                     files.addElement( add );
 
                 }
 
             }
         }
 
         //ok... move the Vector into the files list...
 
         String[] foundFiles = new String[files.size()];
         files.copyInto( foundFiles );
 
         return foundFiles;
 
     }
 
 
     /**
      * Private hepler method for getFilesFromExtension()
      */
     private static Vector blendFilesToVector( Vector v, String[] files )
     {
 
         for ( int i = 0; i < files.length; ++i )
         {
             v.addElement( files[i] );
         }
 
         return v;
     }
 
     /**
      * Checks to see if a file is of a particular type(s).
      * Note that if the file does not have an extension, an empty string
      * (&quot;&quot;) is matched for.
      */
     private static boolean isValidFile( String file, String[] extensions )
     {
 
         String extension = extension( file );
         if ( extension == null )
         {
             extension = "";
         }
 
         //ok.. now that we have the "extension" go through the current know
         //excepted extensions and determine if this one is OK.
 
         for ( int i = 0; i < extensions.length; ++i )
         {
             if ( extensions[i].equals( extension ) )
             {
                 return true;
             }
         }
 
         return false;
 
     }
 
     /**
      * Simple way to make a directory
      */
     public static void mkdir( String dir )
     {
         File file = new File( dir );
         if ( !file.exists() )
         {
             file.mkdirs();
         }
     }
 
     /**
      * Compare the contents of two files to determine if they are equal or not.
      *
      * @param file1 the first file
      * @param file2 the second file
      * @return true if the content of the files are equal or they both don't exist, false otherwise
      */
     public static boolean contentEquals( final File file1, final File file2 )
         throws IOException
     {
         final boolean file1Exists = file1.exists();
         if ( file1Exists != file2.exists() )
         {
             return false;
         }
 
         if ( !file1Exists )
         {
             // two not existing files are equal
             return true;
         }
 
         if ( file1.isDirectory() || file2.isDirectory() )
         {
             // don't want to compare directory contents
             return false;
         }
 
         InputStream input1 = null;
         InputStream input2 = null;
         try
         {
             input1 = new FileInputStream( file1 );
             input2 = new FileInputStream( file2 );
             return IOUtil.contentEquals( input1, input2 );
 
         }
         finally
         {
             IOUtil.close( input1 );
             IOUtil.close( input2 );
         }
     }
 
     /**
      * Convert from a <code>URL</code> to a <code>File</code>.
      *
      * @param url File URL.
      * @return The equivalent <code>File</code> object, or <code>null</code> if the URL's protocol
      *         is not <code>file</code>
      */
     public static File toFile( final URL url )
     {
         if ( url.getProtocol().equals( "file" ) == false )
         {
             return null;
         }
         else
         {
             final String filename = url.getFile().replace( '/', File.separatorChar );
             return new File( filename );
         }
     }
 
     /**
      * Convert the array of Files into a list of URLs.
      *
      * @param files the array of files
      * @return the array of URLs
      * @throws IOException if an error occurs
      */
     public static URL[] toURLs( final File[] files )
         throws IOException
     {
         final URL[] urls = new URL[files.length];
 
         for ( int i = 0; i < urls.length; i++ )
         {
             urls[i] = files[i].toURL();
         }
 
         return urls;
     }
 
     /**
      * Remove extension from filename.
      * ie
      * <pre>
      * foo.txt    --> foo
      * a\b\c.jpg --> a\b\c
      * a\b\c     --> a\b\c
      * </pre>
      *
      * @param filename the filename
      * @return the filename minus extension
      */
     public static String removeExtension( final String filename )
     {
         final int index = filename.lastIndexOf( '.' );
 
         if ( -1 == index )
         {
             return filename;
         }
         else
         {
             return filename.substring( 0, index );
         }
     }
 
     /**
      * Get extension from filename.
      * ie
      * <pre>
      * foo.txt    --> "txt"
      * a\b\c.jpg --> "jpg"
      * a\b\c     --> ""
      * </pre>
      *
      * @param filename the filename
      * @return the extension of filename or "" if none
      */
     public static String getExtension( final String filename )
     {
         final int index = filename.lastIndexOf( '.' );
 
         if ( -1 == index )
         {
             return "";
         }
         else
         {
             return filename.substring( index + 1 );
         }
     }
 
     /**
      * Remove path from filename. Equivalent to the unix command <code>basename</code>
      * ie.
      * <pre>
      * a/b/c.txt --> c.txt
      * a.txt     --> a.txt
      * </pre>
      *
      * @param filepath the filepath
      * @return the filename minus path
      */
     public static String removePath( final String filepath )
     {
         return removePath( filepath, File.separatorChar );
     }
 
     /**
      * Remove path from filename.
      * ie.
      * <pre>
      * a/b/c.txt --> c.txt
      * a.txt     --> a.txt
      * </pre>
      *
      * @param filepath the filepath
      * @return the filename minus path
      */
     public static String removePath( final String filepath, final char fileSeparatorChar )
     {
         final int index = filepath.lastIndexOf( fileSeparatorChar );
 
         if ( -1 == index )
         {
             return filepath;
         }
         else
         {
             return filepath.substring( index + 1 );
         }
     }
 
     /**
      * Get path from filename. Roughly equivalent to the unix command <code>dirname</code>.
      * ie.
      * <pre>
      * a/b/c.txt --> a/b
      * a.txt     --> ""
      * </pre>
      *
      * @param filepath the filepath
      * @return the filename minus path
      */
     public static String getPath( final String filepath )
     {
         return getPath( filepath, File.separatorChar );
     }
 
     /**
      * Get path from filename.
      * ie.
      * <pre>
      * a/b/c.txt --> a/b
      * a.txt     --> ""
      * </pre>
      *
      * @param filepath the filepath
      * @return the filename minus path
      */
     public static String getPath( final String filepath, final char fileSeparatorChar )
     {
         final int index = filepath.lastIndexOf( fileSeparatorChar );
         if ( -1 == index )
         {
             return "";
         }
         else
         {
             return filepath.substring( 0, index );
         }
     }
 
     /**
      * Copy file from source to destination. If <code>destinationDirectory</code> does not exist, it
      * (and any parent directories) will be created. If a file <code>source</code> in
      * <code>destinationDirectory</code> exists, it will be overwritten.
      *
      * @param source               An existing <code>File</code> to copy.
      * @param destinationDirectory A directory to copy <code>source</code> into.
      * @throws java.io.FileNotFoundException if <code>source</code> isn't a normal file.
      * @throws IllegalArgumentException      if <code>destinationDirectory</code> isn't a directory.
      * @throws IOException                   if <code>source</code> does not exist, the file in
      *                                       <code>destinationDirectory</code> cannot be written to, or an IO error occurs during copying.
      */
     public static void copyFileToDirectory( final String source, final String destinationDirectory )
         throws IOException
     {
         copyFileToDirectory( new File( source ), new File( destinationDirectory ) );
     }
 
     /**
      * Copy file from source to destination only if source is newer than the target file.
      * If <code>destinationDirectory</code> does not exist, it
      * (and any parent directories) will be created. If a file <code>source</code> in
      * <code>destinationDirectory</code> exists, it will be overwritten.
      *
      * @param source               An existing <code>File</code> to copy.
      * @param destinationDirectory A directory to copy <code>source</code> into.
      * @throws java.io.FileNotFoundException if <code>source</code> isn't a normal file.
      * @throws IllegalArgumentException      if <code>destinationDirectory</code> isn't a directory.
      * @throws IOException                   if <code>source</code> does not exist, the file in
      *                                       <code>destinationDirectory</code> cannot be written to, or an IO error occurs during copying.
      */
     public static void copyFileToDirectoryIfModified( final String source, final String destinationDirectory )
         throws IOException
     {
         copyFileToDirectoryIfModified( new File( source ), new File( destinationDirectory ) );
     }
 
     /**
      * Copy file from source to destination. If <code>destinationDirectory</code> does not exist, it
      * (and any parent directories) will be created. If a file <code>source</code> in
      * <code>destinationDirectory</code> exists, it will be overwritten.
      *
      * @param source               An existing <code>File</code> to copy.
      * @param destinationDirectory A directory to copy <code>source</code> into.
      * @throws java.io.FileNotFoundException if <code>source</code> isn't a normal file.
      * @throws IllegalArgumentException      if <code>destinationDirectory</code> isn't a directory.
      * @throws IOException                   if <code>source</code> does not exist, the file in
      *                                       <code>destinationDirectory</code> cannot be written to, or an IO error occurs during copying.
      */
     public static void copyFileToDirectory( final File source, final File destinationDirectory )
         throws IOException
     {
         if ( destinationDirectory.exists() && !destinationDirectory.isDirectory() )
         {
             throw new IllegalArgumentException( "Destination is not a directory" );
         }
 
         copyFile( source, new File( destinationDirectory, source.getName() ) );
     }
 
     /**
      * Copy file from source to destination only if source is newer than the target file.
      * If <code>destinationDirectory</code> does not exist, it
      * (and any parent directories) will be created. If a file <code>source</code> in
      * <code>destinationDirectory</code> exists, it will be overwritten.
      *
      * @param source               An existing <code>File</code> to copy.
      * @param destinationDirectory A directory to copy <code>source</code> into.
      * @throws java.io.FileNotFoundException if <code>source</code> isn't a normal file.
      * @throws IllegalArgumentException      if <code>destinationDirectory</code> isn't a directory.
      * @throws IOException                   if <code>source</code> does not exist, the file in
      *                                       <code>destinationDirectory</code> cannot be written to, or an IO error occurs during copying.
      */
     public static void copyFileToDirectoryIfModified( final File source, final File destinationDirectory )
         throws IOException
     {
         if ( destinationDirectory.exists() && !destinationDirectory.isDirectory() )
         {
             throw new IllegalArgumentException( "Destination is not a directory" );
         }
 
         copyFileIfModified( source, new File( destinationDirectory, source.getName() ) );
     }
 
 
     /**
      * Copy file from source to destination. The directories up to <code>destination</code> will be
      * created if they don't already exist. <code>destination</code> will be overwritten if it
      * already exists.
      *
      * @param source      An existing non-directory <code>File</code> to copy bytes from.
      * @param destination A non-directory <code>File</code> to write bytes to (possibly
      *                    overwriting).
      * @throws IOException                   if <code>source</code> does not exist, <code>destination</code> cannot be
      *                                       written to, or an IO error occurs during copying.
      * @throws java.io.FileNotFoundException if <code>destination</code> is a directory
      *                                       (use {@link #copyFileToDirectory}).
      */
     public static void copyFile( final File source, final File destination )
         throws IOException
     {
         //check source exists
         if ( !source.exists() )
         {
             final String message = "File " + source + " does not exist";
             throw new IOException( message );
         }
 
         //does destinations directory exist ?
         if ( destination.getParentFile() != null && !destination.getParentFile().exists() )
         {
             destination.getParentFile().mkdirs();
         }
 
         //make sure we can write to destination
         if ( destination.exists() && !destination.canWrite() )
         {
             final String message = "Unable to open file " + destination + " for writing.";
             throw new IOException( message );
         }
 
         FileInputStream input = null;
         FileOutputStream output = null;
         try
         {
             input = new FileInputStream( source );
             output = new FileOutputStream( destination );
             IOUtil.copy( input, output );
         }
         finally
         {
             IOUtil.close( input );
             IOUtil.close( output );
         }
 
         if ( source.length() != destination.length() )
         {
             final String message = "Failed to copy full contents from " + source + " to " + destination;
             throw new IOException( message );
         }
     }
 
     /**
      * Copy file from source to destination only if source timestamp is later than the destination timestamp.
      * The directories up to <code>destination</code> will be created if they don't already exist.
      * <code>destination</code> will be overwritten if it already exists.
      *
      * @param source      An existing non-directory <code>File</code> to copy bytes from.
      * @param destination A non-directory <code>File</code> to write bytes to (possibly
      *                    overwriting).
      * @throws IOException                   if <code>source</code> does not exist, <code>destination</code> cannot be
      *                                       written to, or an IO error occurs during copying.
      * @throws java.io.FileNotFoundException if <code>destination</code> is a directory
      *                                       (use {@link #copyFileToDirectory}).
      */
     public static boolean copyFileIfModified( final File source, final File destination )
         throws IOException
     {
         if ( destination.lastModified() < source.lastModified() )
         {
             copyFile( source, destination );
 
             return true;
         }
 
         return false;
     }
 
     /**
      * Copies bytes from the URL <code>source</code> to a file <code>destination</code>.
      * The directories up to <code>destination</code> will be created if they don't already exist.
      * <code>destination</code> will be overwritten if it already exists.
      *
      * @param source      A <code>URL</code> to copy bytes from.
      * @param destination A non-directory <code>File</code> to write bytes to (possibly
      *                    overwriting).
      * @throws IOException if
      *                     <ul>
      *                     <li><code>source</code> URL cannot be opened</li>
      *                     <li><code>destination</code> cannot be written to</li>
      *                     <li>an IO error occurs during copying</li>
      *                     </ul>
      */
     public static void copyURLToFile( final URL source, final File destination )
         throws IOException
     {
         //does destination directory exist ?
         if ( destination.getParentFile() != null && !destination.getParentFile().exists() )
         {
             destination.getParentFile().mkdirs();
         }
 
         //make sure we can write to destination
         if ( destination.exists() && !destination.canWrite() )
         {
             final String message = "Unable to open file " + destination + " for writing.";
             throw new IOException( message );
         }
 
         InputStream input = null;
         FileOutputStream output = null;
         try
         {
             input = source.openStream();
             output = new FileOutputStream( destination );
             IOUtil.copy( input, output );
         }
         finally
         {
             IOUtil.close( input );
             IOUtil.close( output );
         }
     }
 
     /**
      * Normalize a path.
      * Eliminates "/../" and "/./" in a string. Returns <code>null</code> if the ..'s went past the
      * root.
      * Eg:
      * <pre>
      * /foo//               -->     /foo/
      * /foo/./              -->     /foo/
      * /foo/../bar          -->     /bar
      * /foo/../bar/         -->     /bar/
      * /foo/../bar/../baz   -->     /baz
      * //foo//./bar         -->     /foo/bar
      * /../                 -->     null
      * </pre>
      *
      * @param path the path to normalize
      * @return the normalized String, or <code>null</code> if too many ..'s.
      */
     public static String normalize( final String path )
     {
         String normalized = path;
         // Resolve occurrences of "//" in the normalized path
         while ( true )
         {
             int index = normalized.indexOf( "//" );
             if ( index < 0 )
             {
                 break;
             }
             normalized = normalized.substring( 0, index ) + normalized.substring( index + 1 );
         }
 
         // Resolve occurrences of "/./" in the normalized path
         while ( true )
         {
             int index = normalized.indexOf( "/./" );
             if ( index < 0 )
             {
                 break;
             }
             normalized = normalized.substring( 0, index ) + normalized.substring( index + 2 );
         }
 
         // Resolve occurrences of "/../" in the normalized path
         while ( true )
         {
             int index = normalized.indexOf( "/../" );
             if ( index < 0 )
             {
                 break;
             }
             if ( index == 0 )
             {
                 return null;  // Trying to go outside our context
             }
             int index2 = normalized.lastIndexOf( '/', index - 1 );
             normalized = normalized.substring( 0, index2 ) + normalized.substring( index + 3 );
         }
 
         // Return the normalized path that we have completed
         return normalized;
     }
 
     /**
      * Will concatenate 2 paths.  Paths with <code>..</code> will be
      * properly handled.
      * <p>Eg.,<br />
      * <code>/a/b/c</code> + <code>d</code> = <code>/a/b/d</code><br />
      * <code>/a/b/c</code> + <code>../d</code> = <code>/a/d</code><br />
      * </p>
      * <p/>
      * Thieved from Tomcat sources...
      *
      * @return The concatenated paths, or null if error occurs
      */
     public static String catPath( final String lookupPath, final String path )
     {
         // Cut off the last slash and everything beyond
         int index = lookupPath.lastIndexOf( "/" );
         String lookup = lookupPath.substring( 0, index );
         String pth = path;
 
         // Deal with .. by chopping dirs off the lookup path
         while ( pth.startsWith( "../" ) )
         {
             if ( lookup.length() > 0 )
             {
                 index = lookup.lastIndexOf( "/" );
                 lookup = lookup.substring( 0, index );
             }
             else
             {
                 // More ..'s than dirs, return null
                 return null;
             }
 
             index = pth.indexOf( "../" ) + 3;
             pth = pth.substring( index );
         }
 
         return new StringBuffer( lookup ).append( "/" ).append( pth ).toString();
     }
 
     /**
      * Resolve a file <code>filename</code> to it's canonical form. If <code>filename</code> is
      * relative (doesn't start with <code>/</code>), it will be resolved relative to
      * <code>baseFile</code>, otherwise it is treated as a normal root-relative path.
      *
      * @param baseFile Where to resolve <code>filename</code> from, if <code>filename</code> is
      *                 relative.
      * @param filename Absolute or relative file path to resolve.
      * @return The canonical <code>File</code> of <code>filename</code>.
      */
     public static File resolveFile( final File baseFile, String filename )
     {
         String filenm = filename;
         if ( '/' != File.separatorChar )
         {
             filenm = filename.replace( '/', File.separatorChar );
         }
 
         if ( '\\' != File.separatorChar )
         {
             filenm = filename.replace( '\\', File.separatorChar );
         }
 
         // deal with absolute files
         if ( filenm.startsWith( File.separator ) || ( Os.isFamily( "windows" ) && filenm.indexOf( ":" ) > 0 ) )
         {
             File file = new File( filenm );
 
             try
             {
                 file = file.getCanonicalFile();
             }
             catch ( final IOException ioe )
             {
             }
 
             return file;
         }
         // FIXME: I'm almost certain this // removal is unnecessary, as getAbsoluteFile() strips
         // them. However, I'm not sure about this UNC stuff. (JT)
         final char[] chars = filename.toCharArray();
         final StringBuffer sb = new StringBuffer();
 
         //remove duplicate file separators in succession - except
         //on win32 at start of filename as UNC filenames can
         //be \\AComputer\AShare\myfile.txt
         int start = 0;
         if ( '\\' == File.separatorChar )
         {
             sb.append( filenm.charAt( 0 ) );
             start++;
         }
 
         for ( int i = start; i < chars.length; i++ )
         {
             final boolean doubleSeparator = File.separatorChar == chars[i] && File.separatorChar == chars[i - 1];
 
             if ( !doubleSeparator )
             {
                 sb.append( chars[i] );
             }
         }
 
         filenm = sb.toString();
 
         //must be relative
         File file = ( new File( baseFile, filenm ) ).getAbsoluteFile();
 
         try
         {
             file = file.getCanonicalFile();
         }
         catch ( final IOException ioe )
         {
         }
 
         return file;
     }
 
     /**
      * Delete a file. If file is directory delete it and all sub-directories.
      */
     public static void forceDelete( final String file )
         throws IOException
     {
         forceDelete( new File( file ) );
     }
 
     /**
      * Delete a file. If file is directory delete it and all sub-directories.
      */
     public static void forceDelete( final File file )
         throws IOException
     {
         if ( file.isDirectory() )
         {
             deleteDirectory( file );
         }
         else
         {
             /*
              * NOTE: Always try to delete the file even if it appears to be non-existent. This will ensure that a
              * symlink whose target does not exist is deleted, too.
              */
             boolean filePresent = file.getCanonicalFile().exists();
             if ( !deleteFile( file ) && filePresent )
             {
                 final String message = "File " + file + " unable to be deleted.";
                 throw new IOException( message );
             }
         }
     }
 
     /**
      * Accommodate Windows bug encountered in both Sun and IBM JDKs.
      * Others possible. If the delete does not work, call System.gc(),
      * wait a little and try again.
      */
     private static boolean deleteFile( File file )
         throws IOException
     {
         if ( file.isDirectory() )
         {
             throw new IOException( "File " + file + " isn't a file." );
         }
 
         if ( !file.delete() )
         {
             if ( Os.isFamily( Os.FAMILY_WINDOWS ) )
             {
                 System.gc();
             }
 
             try
             {
                 Thread.sleep( 10 );
                 return file.delete();
             }
             catch ( InterruptedException ex )
             {
                 return file.delete();
             }
         }
 
         return true;
     }
 
     /**
      * Schedule a file to be deleted when JVM exits.
      * If file is directory delete it and all sub-directories.
      */
     public static void forceDeleteOnExit( final File file )
         throws IOException
     {
         if ( !file.exists() )
         {
             return;
         }
 
         if ( file.isDirectory() )
         {
             deleteDirectoryOnExit( file );
         }
         else
         {
             file.deleteOnExit();
         }
     }
 
     /**
      * Recursively schedule directory for deletion on JVM exit.
      */
     private static void deleteDirectoryOnExit( final File directory )
         throws IOException
     {
         if ( !directory.exists() )
         {
             return;
         }
 
         cleanDirectoryOnExit( directory );
         directory.deleteOnExit();
     }
 
     /**
      * Clean a directory without deleting it.
      */
     private static void cleanDirectoryOnExit( final File directory )
         throws IOException
     {
         if ( !directory.exists() )
         {
             final String message = directory + " does not exist";
             throw new IllegalArgumentException( message );
         }
 
         if ( !directory.isDirectory() )
         {
             final String message = directory + " is not a directory";
             throw new IllegalArgumentException( message );
         }
 
         IOException exception = null;
 
         final File[] files = directory.listFiles();
         for ( int i = 0; i < files.length; i++ )
         {
             final File file = files[i];
             try
             {
                 forceDeleteOnExit( file );
             }
             catch ( final IOException ioe )
             {
                 exception = ioe;
             }
         }
 
         if ( null != exception )
         {
             throw exception;
         }
     }
 
 
     /**
      * Make a directory. If there already exists a file with specified name or
      * the directory is unable to be created then an exception is thrown.
      */
     public static void forceMkdir( final File file )
         throws IOException
     {
         if ( file.exists() )
         {
             if ( file.isFile() )
             {
                 final String message =
                     "File " + file + " exists and is " + "not a directory. Unable to create directory.";
                 throw new IOException( message );
             }
         }
         else
         {
             if ( false == file.mkdirs() )
             {
                 final String message = "Unable to create directory " + file;
                 throw new IOException( message );
             }
         }
     }
 
     /**
      * Recursively delete a directory.
      */
     public static void deleteDirectory( final String directory )
         throws IOException
     {
         deleteDirectory( new File( directory ) );
     }
 
     /**
      * Recursively delete a directory.
      */
     public static void deleteDirectory( final File directory )
         throws IOException
     {
         if ( !directory.exists() )
         {
             return;
         }
 
         cleanDirectory( directory );
         if ( !directory.delete() )
         {
             final String message = "Directory " + directory + " unable to be deleted.";
             throw new IOException( message );
         }
     }
 
     /**
      * Clean a directory without deleting it.
      */
     public static void cleanDirectory( final String directory )
         throws IOException
     {
         cleanDirectory( new File( directory ) );
     }
 
     /**
      * Clean a directory without deleting it.
      */
     public static void cleanDirectory( final File directory )
         throws IOException
     {
         if ( !directory.exists() )
         {
             final String message = directory + " does not exist";
             throw new IllegalArgumentException( message );
         }
 
         if ( !directory.isDirectory() )
         {
             final String message = directory + " is not a directory";
             throw new IllegalArgumentException( message );
         }
 
         IOException exception = null;
 
         final File[] files = directory.listFiles();
 
         if ( files == null )
         {
             return;
         }
 
         for ( int i = 0; i < files.length; i++ )
         {
             final File file = files[i];
             try
             {
                 forceDelete( file );
             }
             catch ( final IOException ioe )
             {
                 exception = ioe;
             }
         }
 
         if ( null != exception )
         {
             throw exception;
         }
     }
 
     /**
      * Recursively count size of a directory.
      *
      * @return size of directory in bytes.
      */
     public static long sizeOfDirectory( final String directory )
     {
         return sizeOfDirectory( new File( directory ) );
     }
 
     /**
      * Recursively count size of a directory.
      *
      * @return size of directory in bytes.
      */
     public static long sizeOfDirectory( final File directory )
     {
         if ( !directory.exists() )
         {
             final String message = directory + " does not exist";
             throw new IllegalArgumentException( message );
         }
 
         if ( !directory.isDirectory() )
         {
             final String message = directory + " is not a directory";
             throw new IllegalArgumentException( message );
         }
 
         long size = 0;
 
         final File[] files = directory.listFiles();
         for ( int i = 0; i < files.length; i++ )
         {
             final File file = files[i];
 
             if ( file.isDirectory() )
             {
                 size += sizeOfDirectory( file );
             }
             else
             {
                 size += file.length();
             }
         }
 
         return size;
     }
 
     /**
      * Return the files contained in the directory, using inclusion and exclusion Ant patterns,
      * including the directory name in each of the files
      *
      * @param directory the directory to scan
      * @param includes  the includes pattern, comma separated
      * @param excludes  the excludes pattern, comma separated
      * @return a list of File objects
      * @throws IOException
      */
     public static List getFiles( File directory, String includes, String excludes )
         throws IOException
     {
         return getFiles( directory, includes, excludes, true );
     }
 
     /**
      * Return the files contained in the directory, using inclusion and exclusion Ant patterns
      *
      * @param directory      the directory to scan
      * @param includes       the includes pattern, comma separated
      * @param excludes       the excludes pattern, comma separated
      * @param includeBasedir true to include the base dir in each file
      * @return a list of File objects
      * @throws IOException
      */
     public static List getFiles( File directory, String includes, String excludes, boolean includeBasedir )
         throws IOException
     {
         List fileNames = getFileNames( directory, includes, excludes, includeBasedir );
 
         List files = new ArrayList();
 
         for ( Iterator i = fileNames.iterator(); i.hasNext(); )
         {
             files.add( new File( (String) i.next() ) );
         }
 
         return files;
     }
 
     /**
      * Return a list of files as String depending options.
      * This method use case sensitive file name.
      *
      * @param directory      the directory to scan
      * @param includes       the includes pattern, comma separated
      * @param excludes       the excludes pattern, comma separated
      * @param includeBasedir true to include the base dir in each String of file
      * @return a list of files as String
      * @throws IOException
      */
     public static List getFileNames( File directory, String includes, String excludes, boolean includeBasedir )
         throws IOException
     {
         return getFileNames( directory, includes, excludes, includeBasedir, true );
     }
 
     /**
      * Return a list of files as String depending options.
      *
      * @param directory       the directory to scan
      * @param includes        the includes pattern, comma separated
      * @param excludes        the excludes pattern, comma separated
      * @param includeBasedir  true to include the base dir in each String of file
      * @param isCaseSensitive true if case sensitive
      * @return a list of files as String
      * @throws IOException
      */
     public static List getFileNames( File directory, String includes, String excludes, boolean includeBasedir,
                                      boolean isCaseSensitive )
         throws IOException
     {
         return getFileAndDirectoryNames( directory, includes, excludes, includeBasedir, isCaseSensitive, true, false );
     }
 
     /**
      * Return a list of directories as String depending options.
      * This method use case sensitive file name.
      *
      * @param directory      the directory to scan
      * @param includes       the includes pattern, comma separated
      * @param excludes       the excludes pattern, comma separated
      * @param includeBasedir true to include the base dir in each String of file
      * @return a list of directories as String
      * @throws IOException
      */
     public static List getDirectoryNames( File directory, String includes, String excludes, boolean includeBasedir )
         throws IOException
     {
         return getDirectoryNames( directory, includes, excludes, includeBasedir, true );
     }
 
     /**
      * Return a list of directories as String depending options.
      *
      * @param directory       the directory to scan
      * @param includes        the includes pattern, comma separated
      * @param excludes        the excludes pattern, comma separated
      * @param includeBasedir  true to include the base dir in each String of file
      * @param isCaseSensitive true if case sensitive
      * @return a list of directories as String
      * @throws IOException
      */
     public static List getDirectoryNames( File directory, String includes, String excludes, boolean includeBasedir,
                                           boolean isCaseSensitive )
         throws IOException
     {
         return getFileAndDirectoryNames( directory, includes, excludes, includeBasedir, isCaseSensitive, false, true );
     }
 
     /**
      * Return a list of files as String depending options.
      *
      * @param directory       the directory to scan
      * @param includes        the includes pattern, comma separated
      * @param excludes        the excludes pattern, comma separated
      * @param includeBasedir  true to include the base dir in each String of file
      * @param isCaseSensitive true if case sensitive
      * @param getFiles        true if get files
      * @param getDirectories  true if get directories
      * @return a list of files as String
      * @throws IOException
      */
     public static List getFileAndDirectoryNames( File directory, String includes, String excludes,
                                                  boolean includeBasedir, boolean isCaseSensitive, boolean getFiles,
                                                  boolean getDirectories )
         throws IOException
     {
         DirectoryScanner scanner = new DirectoryScanner();
 
         scanner.setBasedir( directory );
 
         if ( includes != null )
         {
             scanner.setIncludes( StringUtils.split( includes, "," ) );
         }
 
         if ( excludes != null )
         {
             scanner.setExcludes( StringUtils.split( excludes, "," ) );
         }
 
         scanner.setCaseSensitive( isCaseSensitive );
 
         scanner.scan();
 
         List list = new ArrayList();
 
         if ( getFiles )
         {
             String[] files = scanner.getIncludedFiles();
 
             for ( int i = 0; i < files.length; i++ )
             {
                 if ( includeBasedir )
                 {
                     list.add( directory + FileUtils.FS + files[i] );
                 }
                 else
                 {
                     list.add( files[i] );
                 }
             }
         }
 
         if ( getDirectories )
         {
             String[] directories = scanner.getIncludedDirectories();
 
             for ( int i = 0; i < directories.length; i++ )
             {
                 if ( includeBasedir )
                 {
                     list.add( directory + FileUtils.FS + directories[i] );
                 }
                 else
                 {
                     list.add( directories[i] );
                 }
             }
         }
 
         return list;
     }
 
     public static void copyDirectory( File sourceDirectory, File destinationDirectory )
         throws IOException
     {
         copyDirectory( sourceDirectory, destinationDirectory, "**", null );
     }
 
     public static void copyDirectory( File sourceDirectory, File destinationDirectory, String includes,
                                       String excludes )
         throws IOException
     {
         if ( !sourceDirectory.exists() )
         {
             return;
         }
 
         List files = getFiles( sourceDirectory, includes, excludes );
 
         for ( Iterator i = files.iterator(); i.hasNext(); )
         {
             File file = (File) i.next();
 
             copyFileToDirectory( file, destinationDirectory );
         }
     }
 
     /**
      * Copies a entire directory structure.
      * <p/>
      * Note:
      * <ul>
      * <li>It will include empty directories.
      * <li>The <code>sourceDirectory</code> must exists.
      * </ul>
      *
      * @param sourceDirectory
      * @param destinationDirectory
      * @throws IOException
      */
     public static void copyDirectoryStructure( File sourceDirectory, File destinationDirectory )
         throws IOException
     {
         copyDirectoryStructure( sourceDirectory, destinationDirectory, destinationDirectory, false );
     }
 
     /**
      * Copies an entire directory structure but only source files with timestamp later than the destinations'.
      * <p/>
      * Note:
      * <ul>
      * <li>It will include empty directories.
      * <li>The <code>sourceDirectory</code> must exists.
      * </ul>
      *
      * @param sourceDirectory
      * @param destinationDirectory
      * @throws IOException
      */
     public static void copyDirectoryStructureIfModified( File sourceDirectory, File destinationDirectory )
         throws IOException
     {
         copyDirectoryStructure( sourceDirectory, destinationDirectory, destinationDirectory, true );
     }
 
     private static void copyDirectoryStructure( File sourceDirectory, File destinationDirectory,
                                                 File rootDestinationDirectory, boolean onlyModifiedFiles )
         throws IOException
     {
         if ( sourceDirectory == null )
         {
             throw new IOException( "source directory can't be null." );
         }
 
         if ( destinationDirectory == null )
         {
             throw new IOException( "destination directory can't be null." );
         }
 
         if ( sourceDirectory.equals( destinationDirectory ) )
         {
             throw new IOException( "source and destination are the same directory." );
         }
 
         if ( !sourceDirectory.exists() )
         {
             throw new IOException( "Source directory doesn't exists (" + sourceDirectory.getAbsolutePath() + ")." );
         }
 
         File[] files = sourceDirectory.listFiles();
 
         String sourcePath = sourceDirectory.getAbsolutePath();
 
         for ( int i = 0; i < files.length; i++ )
         {
             File file = files[i];
 
             if ( file.equals( rootDestinationDirectory ) )
             {
                 // We don't copy the destination directory in itself
                 continue;
             }
 
             String dest = file.getAbsolutePath();
 
             dest = dest.substring( sourcePath.length() + 1 );
 
             File destination = new File( destinationDirectory, dest );
 
             if ( file.isFile() )
             {
                 destination = destination.getParentFile();
 
                 if ( onlyModifiedFiles )
                 {
                     copyFileToDirectoryIfModified( file, destination );
                 }
                 else
                 {
                     copyFileToDirectory( file, destination );
                 }
             }
             else if ( file.isDirectory() )
             {
                 if ( !destination.exists() && !destination.mkdirs() )
                 {
                     throw new IOException(
                         "Could not create destination directory '" + destination.getAbsolutePath() + "'." );
                 }
 
                 copyDirectoryStructure( file, destination, rootDestinationDirectory, onlyModifiedFiles );
             }
             else
             {
                 throw new IOException( "Unknown file type: " + file.getAbsolutePath() );
             }
         }
     }
 
     /**
      * Renames a file, even if that involves crossing file system boundaries.
      * <p/>
      * <p>This will remove <code>to</code> (if it exists), ensure that
      * <code>to</code>'s parent directory exists and move
      * <code>from</code>, which involves deleting <code>from</code> as
      * well.</p>
      *
      * @param from the file to move
      * @param to   the new file name
      * @throws IOException if anything bad happens during this
      *                     process.  Note that <code>to</code> may have been deleted
      *                     already when this happens.
      */
     public static void rename( File from, File to )
         throws IOException
     {
         if ( to.exists() && !to.delete() )
         {
             throw new IOException( "Failed to delete " + to + " while trying to rename " + from );
         }
 
         File parent = to.getParentFile();
         if ( parent != null && !parent.exists() && !parent.mkdirs() )
         {
             throw new IOException( "Failed to create directory " + parent + " while trying to rename " + from );
         }
 
         if ( !from.renameTo( to ) )
         {
             copyFile( from, to );
             if ( !from.delete() )
             {
                 throw new IOException( "Failed to delete " + from + " while trying to rename it." );
             }
         }
     }
 
     /**
      * Create a temporary file in a given directory.
      * <p/>
      * <p>The file denoted by the returned abstract pathname did not
      * exist before this method was invoked, any subsequent invocation
      * of this method will yield a different file name.</p>
      * <p/>
      * The filename is prefixNNNNNsuffix where NNNN is a random number
      * </p>
      * <p>This method is different to File.createTempFile of JDK 1.2
      * as it doesn't create the file itself.
      * It uses the location pointed to by java.io.tmpdir
      * when the parentDir attribute is
      * null.</p>
      *
      * @param prefix    prefix before the random number
      * @param suffix    file extension; include the '.'
      * @param parentDir Directory to create the temporary file in -
      *                  java.io.tmpdir used if not specificed
      * @return a File reference to the new temporary file.
      */
     public static File createTempFile( String prefix, String suffix, File parentDir )
     {
 
         File result = null;
         String parent = System.getProperty( "java.io.tmpdir" );
         if ( parentDir != null )
         {
             parent = parentDir.getPath();
         }
         DecimalFormat fmt = new DecimalFormat( "#####" );
         Random rand = new Random( System.currentTimeMillis() + Runtime.getRuntime().freeMemory() );
         synchronized ( rand )
         {
             do
             {
                 result = new File( parent, prefix + fmt.format( Math.abs( rand.nextInt() ) ) + suffix );
             }
             while ( result.exists() );
         }
         return result;
     }
 
     public static void copyFile( File from, File to, String encoding, FilterWrapper[] wrappers )
         throws IOException
     {
         if ( wrappers != null && wrappers.length > 0 )
         {
             // buffer so it isn't reading a byte at a time!
             Reader fileReader = null;
             Writer fileWriter = null;
             try
             {
                 if ( encoding == null || encoding.length() < 1 )
                 {
                     fileReader = new BufferedReader( new FileReader( from ) );
                     fileWriter = new FileWriter( to );
                 }
                 else
                 {
                     FileInputStream instream = new FileInputStream( from );
 
                     FileOutputStream outstream = new FileOutputStream( to );
 
                     fileReader = new BufferedReader( new InputStreamReader( instream, encoding ) );
 
                     fileWriter = new OutputStreamWriter( outstream, encoding );
                 }
 
                 Reader reader = fileReader;
                 for ( int i = 0; i < wrappers.length; i++ )
                 {
                     FilterWrapper wrapper = wrappers[i];
                     reader = wrapper.getReader( reader );
                 }
 
                 IOUtil.copy( reader, fileWriter );
             }
             finally
             {
                 IOUtil.close( fileReader );
                 IOUtil.close( fileWriter );
             }
         }
         else
         {
             if ( to.lastModified() < from.lastModified() )
             {
                 copyFile( from, to );
             }
         }
     }
 
     public static abstract class FilterWrapper
     {
         public abstract Reader getReader( Reader fileReader );
     }
 
     public static List loadFile( File file ) throws IOException
     {
         List lines = new ArrayList();
 
         if ( file.exists() )
         {
             BufferedReader reader = new BufferedReader( new FileReader( file ) );
 
             String line = reader.readLine();
 
             while ( line != null )
             {
                 line = line.trim();
 
                 if ( !line.startsWith( "#" ) && line.length() != 0 )
                 {
                     lines.add ( line );
                 }
                 line = reader.readLine();
             }
 
             reader.close();
         }
 
         return lines;
     }
 }